Netherlands-based Altice completed its acquisition of Cablevision on Tuesday — marking the first day in half a century the tri-state area’s cable market hasn’t been directly influenced by the Dolan family.

Charles Dolan founded Cablevision in 1973 and, with his family, used the money from pay-TV to grow the Bethpage, NY, company into a cable and entertainment power.

The Dolan family eventually oversaw the acquisition of AMC Networks and Madison Square Garden — each of which in recent years has been spun off into its own publicly traded entity.

Dolan, a pay-TV pioneer, also founded Sterling Manhattan Cable and launched Home Box Office — both of which he sold to Time Life Inc. to secure seed money for the system he would build into the country’s No. 7 cable operator.

Altice reached a $17.7 billion agreement to acquire Cablevision in September. The deal cleared its final regulatory hurdle last week.

With the addition of Cablevision to its recently acquired Suddenlink, Altice USA ranks No. 4 among US cable operators, serving 4.6 million customers across 20 states.

Dexter Goei, Altice’s former president who has relocated to New York to serve as Altice USA’s CEO, attempted to calm fears about rumored draconian cutbacks by new management at the company.

“We’ll work to align incentives in just the right way,” he told The Post in a phone interview. “It’s all about building shareholder and stakeholder value.”

Asked about his public comment in September when the deal was announced — “There are more than 300 people at Cablevision earning more than $300,000” — Goei joked that a lot of those executives had volunteered to reduce their salaries to $299,000.

Patrick Drahi, Altice’s founder and controlling shareholder, called the acquisition “a critical step” and promised to “accelerate network investments and bring innovative products and services to US customers.”

Drahi thanked the Dolans “for entrusting us with their life’s work at Cablevision, where they have developed under their pioneering stewardship one of America’s pre-eminent cable operations.”

Under the terms of the transaction, Cablevision shareholders received $34.90 in cash for each Cablevision Class A and Class B common stock. Of those shares, the Dolans accounted for 72 percent of the voting interest and 22 percent of the economic interest.